Abstract:

A norm and correlation based antenna selection algorithm (NCBA）and its modified version (NCBA-M) are proposed for the downlink transmit antenna selection in distributed MIMO systems. The performance of the proposed algorithms are compared with that of two low complexity antenna selection algorithms, which are norm based antenna selection algorithm (NBA) and large scale fading based antenna selection algorithm (LFBA) respectively. The simulation result shows that when no transmit antenna correlation in the same antenna port is considered, NBA, LFBA and NCBA have similar performance to the optimal antenna selection algorithms. However, NBA and LFBA result in a high capacity loss in scenarios with high correlation among transmit antennas, and NCBA-M can still approach the performance of optimal antenna selection algorithm.

Key words: distributed MIMO systems, distributed antenna systems, antenna selection